#!/usr/bin/perl -w

#### reminder: this file (which resides in $JR_HOME/bin or $JR_HOME\bin)
#### is generated from files in $JR_HOME/cmds,
#### so you probably don't want to edit this file directly.

use strict;

sub u_findmain($$);
sub u_init();
sub u_jfindmain();
sub u_jgo($);
sub u_jgot(\@);
sub u_jgox($);
sub u_jr(\@);
sub u_jrc(\@);
sub u_jrfindmain();
sub u_jrgo($);
sub u_jrgot(\@);
sub u_jrgox($);
sub u_jrrun(\@);
sub u_jrt(\@);
sub u_mysystem($);
sub u_quote_args(\@);

u_init();
my $exitstatus;
$exitstatus = u_jrt(@ARGV);
exit $exitstatus;

my $OSdelim;
my $OSsep;

my @EMPTY = (); # global constant

sub u_init() {

  use Env qw(JR_HOME CLASSPATH OS);

  # $OS defined only (usually) on Windows
  # Cygwin: $OS is windows will work fine
  # provided that Perl was installed within Cygwin.
  if(defined($OS) && $OS =~ /Windows/) {
    $OSdelim = ";";
    $OSsep = "\\";
  }
  else {
    $OSdelim = ":";
    $OSsep = "/";
  }

  if (! $JR_HOME ) {
    $! = 1;
    die "$0 requires environment variable JR_HOME\n"
      . "   to be set to the absolute pathname of JR's home\n";
  }

  if (! opendir (JRHOME, $JR_HOME) ) {
    $! = 1;
    die "$0: environment variable JR_HOME set to $JR_HOME\n"
      . "   but that directory does not exist or is not readable\n";
  }
  if (! closedir(JRHOME)) {
    $! = 1;
    die "$0: cannot close $JR_HOME\n";
  }

  my $JRT_JAR;
  my $JRX_JAR;
  ## print "ct sees jrhome= $JR_HOME\n";

  ##Set the JRT_JAR and JRX_JAR variables
  $JRT_JAR = setjarvar( "JRT", "jrt.jar");
  $JRX_JAR = setjarvar( "JRX", "jrx.jar");

  use Getopt::Long;
  my $optionclasspath;
  # handle only -classpath here.
  # other args specific to jr, jrc, or jrrun (e.g., -version, -explicit)
  # can be handled as needed by those tools.
  Getopt::Long::Configure("pass_through");
  GetOptions('classpath=s' => \$optionclasspath)
  || die "$0: problem processing command line options\n";

  ## print "after GetOptions \n";

  my $cpath;
  if ($optionclasspath) {
    $cpath = $optionclasspath . $OSdelim;
  }
  else {
    $cpath = "";
    if(defined($CLASSPATH)) {
	$cpath = $CLASSPATH . $OSdelim;
    }
  }
  # set CLASSPATH to get JR stuff.
  # until 2003-02 we prepended "." and $JR_JAR.
  # 2004-11-27: put both in CLASSPATH since generated code imports run-time
  $CLASSPATH = $cpath . "." . $OSdelim . $JRT_JAR
                            . $OSdelim . $JRX_JAR;
  ## print "ct1 $CLASSPATH \n";
}

# note: code is nearly the same as in jrv.
# at some point, share this sub.
# (no need to name as u_ since this sub used only within u_init.pl.)
sub setjarvar {
    my $m = shift(@_); # message
    my $f = shift(@_); # jar file

    my $jar = $JR_HOME . "/classes/" . $f;
    my $archname;
    $archname = `perl -V:archname`;
    # special case for Perl within Cygwin
    # since Java needs Windows-style CLASSPATH.
    # code after this if should work fine since Cygwin
    # allows both kinds of names.
    if(defined($OS) && $OS =~ /Windows/ && $archname =~ /cygwin/) {
        $jar  = `cygpath -w $jar`;
	chomp($jar);
    }

    ##Make sure that the file $jar points to is accessible
    if ( (-e $jar) !=1 || (-r $JR_HOME) != 1 ) {
	$! = 1;
	die "$0: $m jar file set to " .
	    $jar .
	    "\nbut that file does not exist or is not readable\n";
    }

    return $jar;
}
sub u_jrc(\@) {
  my $A = shift(@_);

  ## print "u_jrc.pl $CLASSPATH \n";

  return u_mysystem("java edu.ucdavis.jr.trans.sun.tools.javac.Main -classpath \"$CLASSPATH\" @$A");

}

sub u_jrt(\@) {
  my $A = shift(@_);
  if ( @$A != 0 ) {
    print STDERR "jrt ignoring command line arguments\n";
  }
  # for translating a simple JR program:
  #   usage: jrt
  #
  # assumes JR program is exactly *.jr.
  #
  # note: removes jrGen (e.g., in case it was copied and now contains extra)

  ##print "jr.pl $CLASSPATH \n";

  # 2005-02-23 following is no longer needed (and probably wasn't for a while).
  # it would also set path to a path with Windows-style separator when run
  # under Cygwin with a Cygwin Perl,
  # which caused, e.g., system("rmic ...") not to find rmic.
  ## set PATH to get JR stuff
  ##use Env qw(PATH);
  ## 2003-09-03 need $OSdelim for ActivePerl (seems OK on other Perls)
  ##$PATH = "$JR_HOME" . "$OSsep" . "bin" . "$OSdelim" . "$PATH";

  # remove
  use File::Path;
  rmtree("jrGen", 0, 1);

  # now translate
  # (note system() returns exit status, so need to negate it)
  # note: use 'javac jrGen/*.java'
  #       rather than 'cd jrGen; javac *.java'
  # in case CLASSPATH set to something interesting
  # (e.g., pathname relative to current directory)

  my @starjr = glob("*.jr");
  # print "zz @starjr \n";

  # the duplicate $OSsep in u_mysystem below is:
  #   innocuous under Windows \\ and UNIX // interpreted without harm.
  #   needed under Cygwin  \\ interpreted as \, given to javac, which
  #      interprets it as Windows pathname, bravo.
  #      (could special case for Cygwin instead,
  #       but above likely more efficient.)

  my $exitstatus;
  my $unused = # avoid "Useless use of not in void context..."
  ##!system("echo 001") &&
  !($exitstatus = u_jrc(@starjr)) &&
  ##!system("echo 002") &&
  !($exitstatus = u_mysystem("javac jrGen" . $OSsep . $OSsep . "*.java"));

  ##  Java1.5 no longer needs rmic, so we don't need the rest of this:
  ##!system("echo 003") &&
  ##chdir("jrGen") &&
  ##!system("echo 004") &&
  ##
  ##!($exitstatus = u_mysystem("$jr_rmic")) &&
  ##!system("echo 005") &&
  ##chdir("..");

  return $exitstatus;
}

sub u_mysystem($) {
  my $s = shift(@_);
  system($s);
  return $?>>8;
}

